14.3 Inland Marine and Nationwide Marine Definition
Key Takeaways
- Inland marine covers mobile property, property in transit, and instrumentalities of transportation/communication; the trigger is mobility/transit, not the type of peril
- The Nationwide Marine Definition (last revised 1976) lists the six permissible inland/ocean marine classes and is the key authority that prevents writing fixed property as inland marine
- Inland marine is typically open-peril, valued/agreed-amount, with little or no coinsurance and broad territory - very different from named-peril commercial property with 80/90% coinsurance
- Major forms include contractors equipment floaters, builders risk (completed-value or reporting), installation floaters, motor truck cargo, bailee forms, EDP, and valuable papers
- A bailee form covers customers' property in the insured's care; carrier cargo legal liability differs from a shipper's transit floater
What Inland Marine Actually Insures
Inland marine insurance covers property that moves, property in transit, and the instrumentalities of transportation and communication (bridges, tunnels, piers, pipelines, towers). Despite the word "marine," most inland marine risks never touch water. The line grew out of ocean marine cargo coverage: early cargo policies ended when goods left the vessel, so an "inland" extension was built to follow shipments overland to their destination.
Quick Answer: If property is mobile, in transit, or hard to fix to one address, it is usually an inland marine risk - not a commercial property risk.
The defining exam test is mobility or transit, not the type of peril. A $400,000 crane on a job site is inland marine (a contractors equipment floater); the same value in a fixed boiler bolted to a building is commercial property.
The Nationwide Marine Definition (NMD)
Developed through the NAIC and last substantially revised in 1976, the Nationwide Marine Definition lists the classes a company may write as inland or ocean marine. Underwriters must keep risks inside these classes; writing fixed-location, non-transit property as "inland marine" to dodge coinsurance is a regulatory violation.
| NMD Class | Typical Examples |
|---|---|
| Imports / Exports | Goods entering or leaving the country |
| Domestic shipments | Goods in transit between U.S. points |
| Instrumentalities of transportation/communication | Bridges, tunnels, piers, pipelines, towers |
| Personal property floaters | Jewelry, fur, fine arts, camera floaters |
| Commercial property floaters | Contractors equipment, mobile medical gear |
| Bailee coverage | Property of others in your care (cleaners, repair shops) |
The NMD is the single most-cited document on inland/ocean marine exam questions - know that it defines the permissible classes and was last revised in 1976.
Why Inland Marine Looks Different from Commercial Property
Inland marine evolved with very few rate/form constraints, so forms are flexible and often manuscript (custom-written). The result contrasts sharply with standard property forms.
| Feature | Inland Marine | Standard Commercial Property |
|---|---|---|
| Coverage basis | Usually open-peril (all-risk) | Often basic/broad named perils |
| Valuation | Frequently valued / agreed amount | ACV or replacement cost |
| Coinsurance | Typically none | Commonly 80% or 90% |
| Territory | Broad, sometimes worldwide | Described premises only |
| Forms | Filed or non-filed (manuscript) | Standardized ISO forms |
Filed vs. non-filed: Some inland marine forms (e.g., the personal articles/personal property floater) are filed with the state. Large commercial classes are often non-filed, letting the underwriter craft terms and rates per risk.
Which document defines the classes of property that insurers may write as inland marine?
Common Inland Marine Forms
The exam expects you to recognize the major commercial inland marine forms:
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Contractors Equipment Floater - mobile tools/machinery (cranes, backhoes) at job sites and in transit; open-peril, no coinsurance.
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Builders Risk - structures under construction; written on a completed-value or reporting basis; covers materials, fixtures, and equipment to be installed.
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Installation Floater - materials/equipment in transit and until installed and accepted.
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Motor Truck Cargo / Transportation Floater - goods being shipped, for the carrier (cargo legal liability) or the owner (transit).
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Bailee Forms - the dry cleaner/repair shop covering customers' property in its care.
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EDP / Electronic Data Processing - computer hardware, media, and extra expense.
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Accounts Receivable and Valuable Papers & Records - hard-to-replace business records.
Worked Example - Builders Risk Completed Value
A developer builds a structure with a completed value of $1,000,000. A fire occurs when the project is 60% complete, causing $200,000 in damage. On a completed-value builders risk form the limit is set at the full $1,000,000 from day one (no monthly reporting), so the $200,000 loss is paid in full, subject only to the deductible - there is no coinsurance penalty for the partial completion.
Bailee Coverage and Transit Concepts
A bailee is someone holding another's property for a business purpose (a repair shop, warehouse, cleaner). Bailee forms cover the customers' property in the bailee's care, custody, or control - a gap because the bailee does not own the property and CGL excludes care-custody-control damage.
Trap: Don't confuse a carrier's cargo legal liability (covers the carrier's liability for goods it is hauling) with a shipper's transit/transportation floater (covers the owner's goods directly). The first is liability-based and limited to the carrier's legal responsibility; the second pays the owner regardless of fault.
Most transit and floater forms are open-peril with broad territory and little or no coinsurance, reinforcing why inland marine is favored for mobile, high-value, or hard-to-replace property.
Inland Marine and the Nationwide Marine Definition
Inland marine insurance grew out of ocean marine to cover property in transit, property held by a bailee, and mobile or 'floating' property that fixed-location property forms handle poorly. The Nationwide Marine Definition sets the regulatory boundaries of what insurers may write as marine, grouping eligible classes into imports/exports, domestic shipments, instrumentalities of transportation and communication (bridges, tunnels, pipelines, radio/TV towers), personal property floaters, and commercial property floaters.
Marine forms are typically open-peril, agreed-value or replacement-cost, often with no coinsurance and no territorial restriction, which is why high-value mobile property is routed here.
The exam tests recognition of the major forms. Personal lines use the Personal Articles Floater (PAF) and the broader Personal Property Floater to schedule jewelry, furs, fine art, cameras, and musical instruments at agreed value with no deductible. Commercial inland marine includes the Contractors Equipment Floater (mobile tools and machinery at job sites), the Motor Truck Cargo form (a carrier's liability for goods it hauls), the Bailee's Customers form (a launderer's or repairer's liability for customers' goods), the Installation Floater, and Transportation/Trip Transit coverage.
When a stem describes property that moves, is held for others, or sits at a temporary location, inland marine is the answer rather than a building-and-contents form.
A landscaping company's wood chipper overturns while being towed between two private job sites. The unit is not licensed for road use and is scheduled on an open-peril contractors equipment floater. How does coverage respond?